1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Greeley [361]
3 years ago
15

A group of students wants to determine the internal resistance of a battery. They connect the battery to a variable resistor. Th

e students measure the potenial differnce across the battery as a function of the current throught the battery as they vary the resistance. Which of the following analyses of the data could be used to determine the internal resistance of the battery?
A. Divide the potential difference across the battery by the current through it for each data point. The average of these calculations gives the internal resistance of the battery.
B. Graph the potential difference across the battery as a function of the current through it. Extrapolate to find the y- intercept and divide this by the average of the current measurements to find the internal resistance of the battery.
C. Find the best-fit straight line for a graph of potential difference across the battery as a function of the current through it. The absolute value of the slope represents the internal resistance of the battery.
D. This data cannot be analyzed to give the internal resistance of the battery, because the potential difference across the battery does not depend on the current.
Physics
1 answer:
andre [41]3 years ago
5 0

Answer:

The answer is "Option C"

Explanation:

Ohm's Rule we remember V = I\times R

It looks like the sample is drawn y=mx while m is curve slope

The slope of the graph is its resistance if they draw a graph v vs I.

However, the internal battery presence resistance can be modified as the straight line equation

y = mx -c

where c is y-intercept:

E = I(R+r) \\\\ E = IR+ Ir\\\\E = V + Ir\\\\V = E- Ir\\\\V = -Ir+E

R is really the internal battery resistance to draw graph V vs I, the slope is internal resistance to the negative slope cure.

You might be interested in
A bicycle accelerates from rest to 6 m/s in 2 s. What is the bicycle's acceleration?
Angelina_Jolie [31]

Answer:

Explanation:I don't say you have to mark my ans as brainliest but if you think it has really helped you plz don't forget to thank me...

4 0
3 years ago
Read 2 more answers
Que cuerpos celestes observó laika durante su viaje
sergejj [24]
Do you want me to translate it?
4 0
3 years ago
A normal walking speed is around 2.0 m/s . how much time t does it take the box to reach this speed if it has the acceleration 5
creativ13 [48]

Given:

u(initial velocity)=0

a=5.54m/s^2

v(final velocity)=2 m/s

v=u +at

Where v is the final velocity.

u is the initial velocity

a is the acceleration.

t is the time

2=0+5.54t

t=2/5.54

t=0.36 sec


6 0
3 years ago
4. Why do you think there needs to be a specific code of ethics for health-related information on the Internet?
alexandr1967 [171]
Medical information is private and some people don't want others to know personal information. that's why a code of ethics will protect their info
8 0
3 years ago
Read 2 more answers
If 3.61 m3 of a gas initially at STP is placed under a pressure of 2.67 atm , the temperature of the gas rises to 37.9 ∘C. What
Pavel [41]

Answer: 1.54m^3

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas at STP = 1 atm

P_2 = final pressure of gas = 2.67 atm

V_1 = initial volume of gas = 3.61m^3

V_2 = final volume of gas = ?

T_1 = initial temperature of gas at STP = 0^oC=273+0=273K

T_2 = final temperature of gas = 37.9^oC=273+37.9=310.9K

Now put all the given values in the above equation, we get:

\frac{1atm\times 3.61m^3}{273K}=\frac{2.67\times V_2}{310.9K}

V_2=1.54m^3

Thus the final volume will be 1.54m^3

7 0
3 years ago
Other questions:
  • radar wave is transmitted and later reflected off an aircraft and recieved 1.4×10^3 sec after being sent out. how far is the air
    7·1 answer
  • 1. What causes velocity to change?
    15·2 answers
  • An explosion that destroys a massive star is called a
    9·2 answers
  • Where is Ceres located
    15·2 answers
  • The frequency of a wave is 200 Hz. The wavelength is 0.1 m. What is the period of the wave?
    13·1 answer
  • A 20.0-kg rock is sliding on a rough, horizontal surface at 8.00 m/s and eventually stops due to friction. The coefficient of ki
    8·2 answers
  • The interference between the two wave pulses shown above will
    13·1 answer
  • A 3.47-m rope is pulled tight with a tension of 106 N. A wave crest generated at one end of the rope takes 0.472 s to propagate
    5·1 answer
  • The graph shows the amplitude of a passing wave over time in seconds (s) What is the approximate frequency of the wave shown? A.
    15·1 answer
  • imagine you are outside enjoying the warm sunshine with friends. as you briefly glance up at the sun, the part of the sun that y
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!